St. Marys, WV Weather - Forecast & Monthly Averages

TEMPERATURE	67
HUMIDITY	21
PRESSURE	101250
WIND COND.	250 25.9

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Weather Quick Facts

The highest monthly average temperature in St. Marys for July is 73.8 degrees
The lowest monthly average temperature in St. Marys for January is 32.4 degrees
The most monthly precipitation in St. Marys occurs in June with 4.9 inches
The air quality index in St. Marys is 17% better than the national average
The pollution index in St. Marys is 3% worse than the national average

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St. Marys Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	24°F	42°F	32°F	3.4"
February	25°F	44°F	33°F	2.6"
March	34°F	56°F	44°F	3.9"
April	43°F	69°F	56°F	4.2"
May	52°F	76°F	63°F	4.1"
June	60°F	83°F	71°F	4.9"
July	64°F	85°F	74°F	4.8"
August	63°F	86°F	73°F	3.6"
September	56°F	80°F	67°F	3.2"
October	45°F	68°F	55°F	3.7"
November	35°F	57°F	45°F	2.9"
December	29°F	46°F	37°F	4.2"

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St. Marys air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
Index	St. Marys	West Virginia	National
Air quality index	35	126	42
Pollution index	2,805,740	1,996,538	2,726,193

St. Marys air quality information

Measurement	Total
Days measured	364
Days with good air quality	333
Days with moderate air quality	31
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

St. Marys air quality information

Pollutant	Total
Arsenic	0.010%
Benzene	0.020%
Carbon Tetrachloride	0.005%
Lead	0.060%
Mercury	0.010%

Average monthly St. Marys temperature with heat index

St. Marys monthly precipitation with daily maximum

St. Marys monthly snow depth with daily maximum

St. Marys monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Pullman, WV	265	31	38.0%
Newport, OH	1,310	35	30.0%
Devola, OH	2,593	35	30.0%
Lower Salem, OH	126	35	30.0%
Cairo, WV	302	35	30.0%
St. Marys, WV	2,050	35	30.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Edgewood, IN	2,050	42	16.0%
Wabana, NL	2,050	n/a
Port-Daniel--Gascons, QC	2,050	n/a
Saint-Ignace-de-Loyola, QC	2,050	n/a
Lexington, IL	2,049	44	12.0%
St. Marys, WV	2,050	35	30.0%

Source: The St. Marys, WV weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.